Báiyín (Chinese: 白银) is a prefecture-level city in China's Gansu province.
Geography and climate
Baiyin is part loess plateau, part desert. Elevation ranges from 1275 to 3321 meters above sea-level. The climate is very arid with only 110-352 mm of annual precipitation. Annual evaporation is 2101 mm resulting in a net loss of approximately 1800 mm. The Yellow River flows from south to north for 214 kilometers through Baiyin. The area is 21,200 km², 3478 km² of that urban.